Photodissociation of N2O4 Adsorbed on Amorphous and Crystalline Water-Ice Films

Akihiro Yabushita; Yoshihiko Inoue; Takehito Senga; Masahiro Kawasaki; Shinri Sato

doi:10.1021/jp036670j

Photodissociation of N₂O₄ Adsorbed on Amorphous and Crystalline Water-Ice Films

Akihiro Yabushita, Yoshihiko Inoue, Takehito Senga, Masahiro Kawasaki, Shinri Sato

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The photodissociation dynamics of N₂O₄ adsorbed on amorphous and polycrystalline water-ice films has been studied at 193, 248, and 351 nm. The adsorbed states of N₂O₄ on the ice films at 80-140 K were investigated by infrared-absorption and temperature-programmed desorption measurements. Time-of-flight (TOP) spectra of the photofragments were measured by probing the resonance-enhanced multiphoton ionization signals of NO(v,J) and O(³P_j). Internally and translationally relaxed NO photofragments were observed. Their energy distributions were mostly independent of the states of the ice films and the photolysis laser wavelengths. The TOP distributions of NO(v = 0) consist of fast and slow components. The slow component is dominant. A large difference in the dissociation yields between amorphous and crystalline ice experiments was observed.

Original language	English
Pages (from-to)	438-446
Number of pages	9
Journal	Journal of Physical Chemistry A
Volume	108
Issue number	3
DOIs	https://doi.org/10.1021/jp036670j
Publication status	Published - Jan 22 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry

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10.1021/jp036670j

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title = "Photodissociation of N2O4 Adsorbed on Amorphous and Crystalline Water-Ice Films",

abstract = "The photodissociation dynamics of N2O4 adsorbed on amorphous and polycrystalline water-ice films has been studied at 193, 248, and 351 nm. The adsorbed states of N2O4 on the ice films at 80-140 K were investigated by infrared-absorption and temperature-programmed desorption measurements. Time-of-flight (TOP) spectra of the photofragments were measured by probing the resonance-enhanced multiphoton ionization signals of NO(v,J) and O(3Pj). Internally and translationally relaxed NO photofragments were observed. Their energy distributions were mostly independent of the states of the ice films and the photolysis laser wavelengths. The TOP distributions of NO(v = 0) consist of fast and slow components. The slow component is dominant. A large difference in the dissociation yields between amorphous and crystalline ice experiments was observed.",

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T1 - Photodissociation of N2O4 Adsorbed on Amorphous and Crystalline Water-Ice Films

AU - Yabushita, Akihiro

AU - Inoue, Yoshihiko

AU - Senga, Takehito

AU - Kawasaki, Masahiro

AU - Sato, Shinri

PY - 2004/1/22

Y1 - 2004/1/22

N2 - The photodissociation dynamics of N2O4 adsorbed on amorphous and polycrystalline water-ice films has been studied at 193, 248, and 351 nm. The adsorbed states of N2O4 on the ice films at 80-140 K were investigated by infrared-absorption and temperature-programmed desorption measurements. Time-of-flight (TOP) spectra of the photofragments were measured by probing the resonance-enhanced multiphoton ionization signals of NO(v,J) and O(3Pj). Internally and translationally relaxed NO photofragments were observed. Their energy distributions were mostly independent of the states of the ice films and the photolysis laser wavelengths. The TOP distributions of NO(v = 0) consist of fast and slow components. The slow component is dominant. A large difference in the dissociation yields between amorphous and crystalline ice experiments was observed.

AB - The photodissociation dynamics of N2O4 adsorbed on amorphous and polycrystalline water-ice films has been studied at 193, 248, and 351 nm. The adsorbed states of N2O4 on the ice films at 80-140 K were investigated by infrared-absorption and temperature-programmed desorption measurements. Time-of-flight (TOP) spectra of the photofragments were measured by probing the resonance-enhanced multiphoton ionization signals of NO(v,J) and O(3Pj). Internally and translationally relaxed NO photofragments were observed. Their energy distributions were mostly independent of the states of the ice films and the photolysis laser wavelengths. The TOP distributions of NO(v = 0) consist of fast and slow components. The slow component is dominant. A large difference in the dissociation yields between amorphous and crystalline ice experiments was observed.

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Photodissociation of N₂O₄ Adsorbed on Amorphous and Crystalline Water-Ice Films

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